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Real-time Strehl and image quality performance estimator at Paranal Observatory

Mawet, Dimitri and Smette, Alain and Sarazin, Marc S. and Kuntschner, Harald and Girard, Julien H. (2014) Real-time Strehl and image quality performance estimator at Paranal Observatory. In: Adaptive Optics Systems IV. Proceedings of SPIE. No.9148. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 91484T. ISBN 9780819496164.

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Here we describe a prototype Strehl and image quality performance estimator and its integration into Paranal operations, starting with UT4 and its suite of three infrared instruments: adaptive optics-fed imager/spectrograph NACO (temporarily out of operations) and integral field unit SINFONI, as well as wide-field imager HAWK-I. The real-time estimator processes the ambient conditions (seeing, coherence time, airmass, etc.) from the DIMM, and telescope Shack-Hartmann image analyzer to produce estimates of image quality and Strehl ratio every ~ 30 seconds. The estimate is using ad-hoc instrumental models, based in part on the PAOLA adaptive optics simulator. We discuss the current performance of the estimator vs real IQ and Strehl measurements, its impact on service mode efficiency, prospects for full deployment at other UTs, its use for the adaptive optics facility (AOF), and inclusion of the SLODAR-measured fine turbulence characteristics.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Mawet, Dimitri0000-0002-8895-4735
Girard, Julien H.0000-0001-8627-0404
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 5 September 2014. This work was carried out at the European Southern Observatory (ESO) site of Paranal, Vitacura (Santiago, Chile), and Garching (Germany).
Funding AgencyGrant Number
European Southern Observatory (ESO)UNSPECIFIED
Subject Keywords:Adaptive Optics, Very Large Telescope, Strehl ratio, Observation scheduling, Quality Control, Science operations
Series Name:Proceedings of SPIE
Issue or Number:9148
Record Number:CaltechAUTHORS:20150520-064945282
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Official Citation:Dimitri Mawet ; Alain Smette ; Marc S. Sarazin ; Harald Kuntschner and Julien H. Girard " Real-time Strehl and image quality performance estimator at Paranal Observatory ", Proc. SPIE 9148, Adaptive Optics Systems IV, 91484T (August 7, 2014); doi:10.1117/12.2057263;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57678
Deposited On:20 May 2015 18:41
Last Modified:10 Nov 2021 21:53

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